fishHEADmaster

1 files changed, 1050 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
new file mode 100644
index 0000000..d8e858c
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
@@ -0,0 +1,1050 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+#include <linux/etherdevice.h>
+#include <net/mac80211.h>
+#include "iwl-io.h"
+#include "iwl-prph.h"
+#include "fw-api.h"
+#include "mvm.h"
+
+const u8 iwl_mvm_ac_to_tx_fifo[] = {
+	IWL_MVM_TX_FIFO_BK,
+	IWL_MVM_TX_FIFO_BE,
+	IWL_MVM_TX_FIFO_VI,
+	IWL_MVM_TX_FIFO_VO,
+};
+
+struct iwl_mvm_mac_iface_iterator_data {
+	struct iwl_mvm *mvm;
+	struct ieee80211_vif *vif;
+	unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
+	unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
+	unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_FIRST_AGG_QUEUE)];
+	enum iwl_tsf_id preferred_tsf;
+	bool found_vif;
+};
+
+static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
+				       struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_mac_iface_iterator_data *data = _data;
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	u32 ac;
+
+	/* Iterator may already find the interface being added -- skip it */
+	if (vif == data->vif) {
+		data->found_vif = true;
+		return;
+	}
+
+	/* Mark the queues used by the vif */
+	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+		if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
+			__set_bit(vif->hw_queue[ac], data->used_hw_queues);
+
+	if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
+		__set_bit(vif->cab_queue, data->used_hw_queues);
+
+	/*
+	 * Mark MAC IDs as used by clearing the available bit, and
+	 * (below) mark TSFs as used if their existing use is not
+	 * compatible with the new interface type.
+	 * No locking or atomic bit operations are needed since the
+	 * data is on the stack of the caller function.
+	 */
+	__clear_bit(mvmvif->id, data->available_mac_ids);
+
+	/*
+	 * The TSF is a hardware/firmware resource, there are 4 and
+	 * the driver should assign and free them as needed. However,
+	 * there are cases where 2 MACs should share the same TSF ID
+	 * for the purpose of clock sync, an optimization to avoid
+	 * clock drift causing overlapping TBTTs/DTIMs for a GO and
+	 * client in the system.
+	 *
+	 * The firmware will decide according to the MAC type which
+	 * will be the master and slave. Clients that need to sync
+	 * with a remote station will be the master, and an AP or GO
+	 * will be the slave.
+	 *
+	 * Depending on the new interface type it can be slaved to
+	 * or become the master of an existing interface.
+	 */
+	switch (data->vif->type) {
+	case NL80211_IFTYPE_STATION:
+		/*
+		 * The new interface is client, so if the existing one
+		 * we're iterating is an AP, the TSF should be used to
+		 * avoid drift between the new client and existing AP,
+		 * the existing AP will get drift updates from the new
+		 * client context in this case
+		 */
+		if (vif->type == NL80211_IFTYPE_AP) {
+			if (data->preferred_tsf == NUM_TSF_IDS &&
+			    test_bit(mvmvif->tsf_id, data->available_tsf_ids))
+				data->preferred_tsf = mvmvif->tsf_id;
+			return;
+		}
+		break;
+	case NL80211_IFTYPE_AP:
+		/*
+		 * The new interface is AP/GO, so should get drift
+		 * updates from an existing client or use the same
+		 * TSF as an existing GO. There's no drift between
+		 * TSFs internally but if they used different TSFs
+		 * then a new client MAC could update one of them
+		 * and cause drift that way.
+		 */
+		if (vif->type == NL80211_IFTYPE_STATION ||
+		    vif->type == NL80211_IFTYPE_AP) {
+			if (data->preferred_tsf == NUM_TSF_IDS &&
+			    test_bit(mvmvif->tsf_id, data->available_tsf_ids))
+				data->preferred_tsf = mvmvif->tsf_id;
+			return;
+		}
+		break;
+	default:
+		/*
+		 * For all other interface types there's no need to
+		 * take drift into account. Either they're exclusive
+		 * like IBSS and monitor, or we don't care much about
+		 * their TSF (like P2P Device), but we won't be able
+		 * to share the TSF resource.
+		 */
+		break;
+	}
+
+	/*
+	 * Unless we exited above, we can't share the TSF resource
+	 * that the virtual interface we're iterating over is using
+	 * with the new one, so clear the available bit and if this
+	 * was the preferred one, reset that as well.
+	 */
+	__clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
+
+	if (data->preferred_tsf == mvmvif->tsf_id)
+		data->preferred_tsf = NUM_TSF_IDS;
+}
+
+/*
+ * Get the mask of the queus used by the vif
+ */
+u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
+				struct ieee80211_vif *vif)
+{
+	u32 qmask = 0, ac;
+
+	if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
+		return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
+
+	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+		if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
+			qmask |= BIT(vif->hw_queue[ac]);
+
+	return qmask;
+}
+
+static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
+					       struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_mvm_mac_iface_iterator_data data = {
+		.mvm = mvm,
+		.vif = vif,
+		.available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
+		.available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
+		/* no preference yet */
+		.preferred_tsf = NUM_TSF_IDS,
+		.used_hw_queues = {
+			BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
+			BIT(IWL_MVM_AUX_QUEUE) |
+			BIT(IWL_MVM_CMD_QUEUE)
+		},
+		.found_vif = false,
+	};
+	u32 ac;
+	int ret;
+
+	/*
+	 * Allocate a MAC ID and a TSF for this MAC, along with the queues
+	 * and other resources.
+	 */
+
+	/*
+	 * Before the iterator, we start with all MAC IDs and TSFs available.
+	 *
+	 * During iteration, all MAC IDs are cleared that are in use by other
+	 * virtual interfaces, and all TSF IDs are cleared that can't be used
+	 * by this new virtual interface because they're used by an interface
+	 * that can't share it with the new one.
+	 * At the same time, we check if there's a preferred TSF in the case
+	 * that we should share it with another interface.
+	 */
+
+	/* Currently, MAC ID 0 should be used only for the managed vif */
+	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
+		__clear_bit(0, data.available_mac_ids);
+
+	ieee80211_iterate_active_interfaces_atomic(
+		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
+		iwl_mvm_mac_iface_iterator, &data);
+
+	/*
+	 * In the case we're getting here during resume, it's similar to
+	 * firmware restart, and with RESUME_ALL the iterator will find
+	 * the vif being added already.
+	 * We don't want to reassign any IDs in either case since doing
+	 * so would probably assign different IDs (as interfaces aren't
+	 * necessarily added in the same order), but the old IDs were
+	 * preserved anyway, so skip ID assignment for both resume and
+	 * recovery.
+	 */
+	if (data.found_vif)
+		return 0;
+
+	/* Therefore, in recovery, we can't get here */
+	WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
+
+	mvmvif->id = find_first_bit(data.available_mac_ids,
+				    NUM_MAC_INDEX_DRIVER);
+	if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
+		IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
+		ret = -EIO;
+		goto exit_fail;
+	}
+
+	if (data.preferred_tsf != NUM_TSF_IDS)
+		mvmvif->tsf_id = data.preferred_tsf;
+	else
+		mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
+						NUM_TSF_IDS);
+	if (mvmvif->tsf_id == NUM_TSF_IDS) {
+		IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
+		ret = -EIO;
+		goto exit_fail;
+	}
+
+	mvmvif->color = 0;
+
+	INIT_LIST_HEAD(&mvmvif->time_event_data.list);
+	mvmvif->time_event_data.id = TE_MAX;
+
+	/* No need to allocate data queues to P2P Device MAC.*/
+	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
+		for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+			vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
+
+		return 0;
+	}
+
+	/* Find available queues, and allocate them to the ACs */
+	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+		u8 queue = find_first_zero_bit(data.used_hw_queues,
+					       IWL_MVM_FIRST_AGG_QUEUE);
+
+		if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
+			IWL_ERR(mvm, "Failed to allocate queue\n");
+			ret = -EIO;
+			goto exit_fail;
+		}
+
+		__set_bit(queue, data.used_hw_queues);
+		vif->hw_queue[ac] = queue;
+	}
+
+	/* Allocate the CAB queue for softAP and GO interfaces */
+	if (vif->type == NL80211_IFTYPE_AP) {
+		u8 queue = find_first_zero_bit(data.used_hw_queues,
+					       IWL_MVM_FIRST_AGG_QUEUE);
+
+		if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
+			IWL_ERR(mvm, "Failed to allocate cab queue\n");
+			ret = -EIO;
+			goto exit_fail;
+		}
+
+		vif->cab_queue = queue;
+	} else {
+		vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
+	}
+
+	mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
+	mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
+
+	return 0;
+
+exit_fail:
+	memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
+	memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
+	vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
+	return ret;
+}
+
+int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	u32 ac;
+	int ret;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
+	if (ret)
+		return ret;
+
+	switch (vif->type) {
+	case NL80211_IFTYPE_P2P_DEVICE:
+		iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
+					IWL_MVM_TX_FIFO_VO);
+		break;
+	case NL80211_IFTYPE_AP:
+		iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
+					IWL_MVM_TX_FIFO_MCAST);
+		/* fall through */
+	default:
+		for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+			iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
+						iwl_mvm_ac_to_tx_fifo[ac]);
+		break;
+	}
+
+	return 0;
+}
+
+void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	int ac;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	switch (vif->type) {
+	case NL80211_IFTYPE_P2P_DEVICE:
+		iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
+		break;
+	case NL80211_IFTYPE_AP:
+		iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
+		/* fall through */
+	default:
+		for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+			iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
+	}
+}
+
+static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
+			      struct ieee80211_vif *vif,
+			      enum ieee80211_band band,
+			      u8 *cck_rates, u8 *ofdm_rates)
+{
+	struct ieee80211_supported_band *sband;
+	unsigned long basic = vif->bss_conf.basic_rates;
+	int lowest_present_ofdm = 100;
+	int lowest_present_cck = 100;
+	u8 cck = 0;
+	u8 ofdm = 0;
+	int i;
+
+	sband = mvm->hw->wiphy->bands[band];
+
+	for_each_set_bit(i, &basic, BITS_PER_LONG) {
+		int hw = sband->bitrates[i].hw_value;
+		if (hw >= IWL_FIRST_OFDM_RATE) {
+			ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
+			if (lowest_present_ofdm > hw)
+				lowest_present_ofdm = hw;
+		} else {
+			BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
+
+			cck |= BIT(hw);
+			if (lowest_present_cck > hw)
+				lowest_present_cck = hw;
+		}
+	}
+
+	/*
+	 * Now we've got the basic rates as bitmaps in the ofdm and cck
+	 * variables. This isn't sufficient though, as there might not
+	 * be all the right rates in the bitmap. E.g. if the only basic
+	 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
+	 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
+	 *
+	 *    [...] a STA responding to a received frame shall transmit
+	 *    its Control Response frame [...] at the highest rate in the
+	 *    BSSBasicRateSet parameter that is less than or equal to the
+	 *    rate of the immediately previous frame in the frame exchange
+	 *    sequence ([...]) and that is of the same modulation class
+	 *    ([...]) as the received frame. If no rate contained in the
+	 *    BSSBasicRateSet parameter meets these conditions, then the
+	 *    control frame sent in response to a received frame shall be
+	 *    transmitted at the highest mandatory rate of the PHY that is
+	 *    less than or equal to the rate of the received frame, and
+	 *    that is of the same modulation class as the received frame.
+	 *
+	 * As a consequence, we need to add all mandatory rates that are
+	 * lower than all of the basic rates to these bitmaps.
+	 */
+
+	if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
+		ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
+	if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
+		ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
+	/* 6M already there or needed so always add */
+	ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
+
+	/*
+	 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
+	 * Note, however:
+	 *  - if no CCK rates are basic, it must be ERP since there must
+	 *    be some basic rates at all, so they're OFDM => ERP PHY
+	 *    (or we're in 5 GHz, and the cck bitmap will never be used)
+	 *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
+	 *  - if 5.5M is basic, 1M and 2M are mandatory
+	 *  - if 2M is basic, 1M is mandatory
+	 *  - if 1M is basic, that's the only valid ACK rate.
+	 * As a consequence, it's not as complicated as it sounds, just add
+	 * any lower rates to the ACK rate bitmap.
+	 */
+	if (IWL_RATE_11M_INDEX < lowest_present_cck)
+		cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
+	if (IWL_RATE_5M_INDEX < lowest_present_cck)
+		cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
+	if (IWL_RATE_2M_INDEX < lowest_present_cck)
+		cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
+	/* 1M already there or needed so always add */
+	cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
+
+	*cck_rates = cck;
+	*ofdm_rates = ofdm;
+}
+
+static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
+					struct ieee80211_vif *vif,
+					struct iwl_mac_ctx_cmd *cmd,
+					u32 action)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct ieee80211_chanctx_conf *chanctx;
+	u8 cck_ack_rates, ofdm_ack_rates;
+	int i;
+
+	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
+							    mvmvif->color));
+	cmd->action = cpu_to_le32(action);
+
+	switch (vif->type) {
+	case NL80211_IFTYPE_STATION:
+		if (vif->p2p)
+			cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
+		else
+			cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
+		break;
+	case NL80211_IFTYPE_AP:
+		cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
+		break;
+	case NL80211_IFTYPE_MONITOR:
+		cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
+		break;
+	case NL80211_IFTYPE_P2P_DEVICE:
+		cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
+		break;
+	default:
+		WARN_ON_ONCE(1);
+	}
+
+	cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
+
+	memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
+	if (vif->bss_conf.bssid)
+		memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
+	else
+		eth_broadcast_addr(cmd->bssid_addr);
+
+	rcu_read_lock();
+	chanctx = rcu_dereference(vif->chanctx_conf);
+	iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
+					    : IEEE80211_BAND_2GHZ,
+			  &cck_ack_rates, &ofdm_ack_rates);
+	rcu_read_unlock();
+
+	cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
+	cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
+
+	cmd->cck_short_preamble =
+		cpu_to_le32(vif->bss_conf.use_short_preamble ?
+			    MAC_FLG_SHORT_PREAMBLE : 0);
+	cmd->short_slot =
+		cpu_to_le32(vif->bss_conf.use_short_slot ?
+			    MAC_FLG_SHORT_SLOT : 0);
+
+	for (i = 0; i < AC_NUM; i++) {
+		cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
+		cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
+		cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs;
+		cmd->ac[i].edca_txop =
+			cpu_to_le16(mvmvif->queue_params[i].txop * 32);
+		cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]);
+	}
+
+	/* in AP mode, the MCAST FIFO takes the EDCA params from VO */
+	if (vif->type == NL80211_IFTYPE_AP)
+		cmd->ac[AC_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
+
+	if (vif->bss_conf.qos)
+		cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
+
+	/* Don't use cts to self as the fw doesn't support it currently. */
+	if (vif->bss_conf.use_cts_prot)
+		cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
+
+	/*
+	 * I think that we should enable these 2 flags regardless the HT PROT
+	 * fields in the HT IE, but I am not sure. Someone knows whom to ask?...
+	 */
+	if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
+		cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
+		cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT |
+						     MAC_PROT_FLG_FAT_PROT);
+	}
+
+	cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
+}
+
+static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
+				     struct iwl_mac_ctx_cmd *cmd)
+{
+	int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
+				       sizeof(*cmd), cmd);
+	if (ret)
+		IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
+			le32_to_cpu(cmd->action), ret);
+	return ret;
+}
+
+/*
+ * Fill the specific data for mac context of type station or p2p client
+ */
+static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
+					  struct ieee80211_vif *vif,
+					  struct iwl_mac_data_sta *ctxt_sta,
+					  bool force_assoc_off)
+{
+	/* We need the dtim_period to set the MAC as associated */
+	if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
+	    !force_assoc_off) {
+		u32 dtim_offs;
+
+		/*
+		 * The DTIM count counts down, so when it is N that means N
+		 * more beacon intervals happen until the DTIM TBTT. Therefore
+		 * add this to the current time. If that ends up being in the
+		 * future, the firmware will handle it.
+		 *
+		 * Also note that the system_timestamp (which we get here as
+		 * "sync_device_ts") and TSF timestamp aren't at exactly the
+		 * same offset in the frame -- the TSF is at the first symbol
+		 * of the TSF, the system timestamp is at signal acquisition
+		 * time. This means there's an offset between them of at most
+		 * a few hundred microseconds (24 * 8 bits + PLCP time gives
+		 * 384us in the longest case), this is currently not relevant
+		 * as the firmware wakes up around 2ms before the TBTT.
+		 */
+		dtim_offs = vif->bss_conf.sync_dtim_count *
+				vif->bss_conf.beacon_int;
+		/* convert TU to usecs */
+		dtim_offs *= 1024;
+
+		ctxt_sta->dtim_tsf =
+			cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
+		ctxt_sta->dtim_time =
+			cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
+
+		IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
+			       le64_to_cpu(ctxt_sta->dtim_tsf),
+			       le32_to_cpu(ctxt_sta->dtim_time),
+			       dtim_offs);
+
+		ctxt_sta->is_assoc = cpu_to_le32(1);
+	} else {
+		ctxt_sta->is_assoc = cpu_to_le32(0);
+	}
+
+	ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
+	ctxt_sta->bi_reciprocal =
+		cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
+	ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
+					      vif->bss_conf.dtim_period);
+	ctxt_sta->dtim_reciprocal =
+		cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
+					       vif->bss_conf.dtim_period));
+
+	ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
+	ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
+}
+
+static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm,
+					struct ieee80211_vif *vif,
+					u32 action)
+{
+	struct iwl_mac_ctx_cmd cmd = {};
+
+	WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p);
+
+	/* Fill the common data for all mac context types */
+	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
+
+	/* Allow beacons to pass through as long as we are not associated,or we
+	 * do not have dtim period information */
+	if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period)
+		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
+	else
+		cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON);
+
+	/* Fill the data specific for station mode */
+	iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta,
+				      action == FW_CTXT_ACTION_ADD);
+
+	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
+}
+
+static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm,
+					   struct ieee80211_vif *vif,
+					   u32 action)
+{
+	struct iwl_mac_ctx_cmd cmd = {};
+	struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
+
+	WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p);
+
+	/* Fill the common data for all mac context types */
+	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
+
+	/* Fill the data specific for station mode */
+	iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta,
+				      action == FW_CTXT_ACTION_ADD);
+
+	cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
+					IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
+
+	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
+}
+
+static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
+					 struct ieee80211_vif *vif,
+					 u32 action)
+{
+	struct iwl_mac_ctx_cmd cmd = {};
+
+	WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
+
+	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
+
+	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
+				       MAC_FILTER_IN_CONTROL_AND_MGMT |
+				       MAC_FILTER_IN_BEACON |
+				       MAC_FILTER_IN_PROBE_REQUEST);
+
+	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
+}
+
+struct iwl_mvm_go_iterator_data {
+	bool go_active;
+};
+
+static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_go_iterator_data *data = _data;
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active)
+		data->go_active = true;
+}
+
+static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
+					   struct ieee80211_vif *vif,
+					   u32 action)
+{
+	struct iwl_mac_ctx_cmd cmd = {};
+	struct iwl_mvm_go_iterator_data data = {};
+
+	WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
+
+	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
+
+	cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
+
+	/* Override the filter flags to accept only probe requests */
+	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
+
+	/*
+	 * This flag should be set to true when the P2P Device is
+	 * discoverable and there is at least another active P2P GO. Settings
+	 * this flag will allow the P2P Device to be discoverable on other
+	 * channels in addition to its listen channel.
+	 * Note that this flag should not be set in other cases as it opens the
+	 * Rx filters on all MAC and increases the number of interrupts.
+	 */
+	ieee80211_iterate_active_interfaces_atomic(
+		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
+		iwl_mvm_go_iterator, &data);
+
+	cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
+	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
+}
+
+static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
+				     struct iwl_mac_beacon_cmd *beacon_cmd,
+				     u8 *beacon, u32 frame_size)
+{
+	u32 tim_idx;
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
+
+	/* The index is relative to frame start but we start looking at the
+	 * variable-length part of the beacon. */
+	tim_idx = mgmt->u.beacon.variable - beacon;
+
+	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
+	while ((tim_idx < (frame_size - 2)) &&
+			(beacon[tim_idx] != WLAN_EID_TIM))
+		tim_idx += beacon[tim_idx+1] + 2;
+
+	/* If TIM field was found, set variables */
+	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
+		beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
+		beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
+	} else {
+		IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
+	}
+}
+
+static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
+					struct ieee80211_vif *vif,
+					struct sk_buff *beacon)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_host_cmd cmd = {
+		.id = BEACON_TEMPLATE_CMD,
+		.flags = CMD_ASYNC,
+	};
+	struct iwl_mac_beacon_cmd beacon_cmd = {};
+	struct ieee80211_tx_info *info;
+	u32 beacon_skb_len;
+	u32 rate;
+
+	if (WARN_ON(!beacon))
+		return -EINVAL;
+
+	beacon_skb_len = beacon->len;
+
+	/* TODO: for now the beacon template id is set to be the mac context id.
+	 * Might be better to handle it as another resource ... */
+	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
+
+	/* Set up TX command fields */
+	beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
+	beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
+	beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
+	beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
+					     TX_CMD_FLG_BT_DIS  |
+					     TX_CMD_FLG_TSF);
+
+	mvm->mgmt_last_antenna_idx =
+		iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw),
+				     mvm->mgmt_last_antenna_idx);
+
+	beacon_cmd.tx.rate_n_flags =
+		cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
+			    RATE_MCS_ANT_POS);
+
+	info = IEEE80211_SKB_CB(beacon);
+
+	if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
+		rate = IWL_FIRST_OFDM_RATE;
+	} else {
+		rate = IWL_FIRST_CCK_RATE;
+		beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
+	}
+	beacon_cmd.tx.rate_n_flags |=
+		cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
+
+	/* Set up TX beacon command fields */
+	iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
+				 beacon->data,
+				 beacon_skb_len);
+
+	/* Submit command */
+	cmd.len[0] = sizeof(beacon_cmd);
+	cmd.data[0] = &beacon_cmd;
+	cmd.dataflags[0] = 0;
+	cmd.len[1] = beacon_skb_len;
+	cmd.data[1] = beacon->data;
+	cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
+
+	return iwl_mvm_send_cmd(mvm, &cmd);
+}
+
+/* The beacon template for the AP/GO context has changed and needs update */
+int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
+				    struct ieee80211_vif *vif)
+{
+	struct sk_buff *beacon;
+	int ret;
+
+	WARN_ON(vif->type != NL80211_IFTYPE_AP);
+
+	beacon = ieee80211_beacon_get(mvm->hw, vif);
+	if (!beacon)
+		return -ENOMEM;
+
+	ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
+	dev_kfree_skb(beacon);
+	return ret;
+}
+
+/*
+ * Fill the specific data for mac context of type AP of P2P GO
+ */
+static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
+					 struct ieee80211_vif *vif,
+					 struct iwl_mac_data_ap *ctxt_ap,
+					 bool add)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
+	ctxt_ap->bi_reciprocal =
+		cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
+	ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
+					     vif->bss_conf.dtim_period);
+	ctxt_ap->dtim_reciprocal =
+		cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
+					       vif->bss_conf.dtim_period));
+
+	ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
+
+	/*
+	 * Only read the system time when the MAC is being added, when we
+	 * just modify the MAC then we should keep the time -- the firmware
+	 * can otherwise have a "jumping" TBTT.
+	 */
+	if (add)
+		mvmvif->ap_beacon_time =
+			iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
+
+	ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
+
+	ctxt_ap->beacon_tsf = 0; /* unused */
+
+	/* TODO: Assume that the beacon id == mac context id */
+	ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
+}
+
+static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
+				   struct ieee80211_vif *vif,
+				   u32 action)
+{
+	struct iwl_mac_ctx_cmd cmd = {};
+
+	WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
+
+	/* Fill the common data for all mac context types */
+	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
+
+	/* Also enable probe requests to pass */
+	cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
+
+	/* Fill the data specific for ap mode */
+	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
+				     action == FW_CTXT_ACTION_ADD);
+
+	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
+}
+
+static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
+				   struct ieee80211_vif *vif,
+				   u32 action)
+{
+	struct iwl_mac_ctx_cmd cmd = {};
+	struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
+
+	WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
+
+	/* Fill the common data for all mac context types */
+	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
+
+	/* Fill the data specific for GO mode */
+	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
+				     action == FW_CTXT_ACTION_ADD);
+
+	cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
+					IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
+	cmd.go.opp_ps_enabled =
+			cpu_to_le32(!!(noa->oppps_ctwindow &
+					IEEE80211_P2P_OPPPS_ENABLE_BIT));
+
+	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
+}
+
+static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+				u32 action)
+{
+	switch (vif->type) {
+	case NL80211_IFTYPE_STATION:
+		if (!vif->p2p)
+			return iwl_mvm_mac_ctxt_cmd_station(mvm, vif,
+							    action);
+		else
+			return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif,
+							       action);
+		break;
+	case NL80211_IFTYPE_AP:
+		if (!vif->p2p)
+			return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
+		else
+			return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
+		break;
+	case NL80211_IFTYPE_MONITOR:
+		return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
+	case NL80211_IFTYPE_P2P_DEVICE:
+		return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
+	default:
+		break;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	int ret;
+
+	if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
+		      vif->addr, ieee80211_vif_type_p2p(vif)))
+		return -EIO;
+
+	ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD);
+	if (ret)
+		return ret;
+
+	mvmvif->uploaded = true;
+	return 0;
+}
+
+int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
+		      vif->addr, ieee80211_vif_type_p2p(vif)))
+		return -EIO;
+
+	return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY);
+}
+
+int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_mac_ctx_cmd cmd;
+	int ret;
+
+	if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
+		      vif->addr, ieee80211_vif_type_p2p(vif)))
+		return -EIO;
+
+	memset(&cmd, 0, sizeof(cmd));
+
+	cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
+							   mvmvif->color));
+	cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
+
+	ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
+				   sizeof(cmd), &cmd);
+	if (ret) {
+		IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
+		return ret;
+	}
+
+	mvmvif->uploaded = false;
+	return 0;
+}
+
+int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
+			    struct iwl_rx_cmd_buffer *rxb,
+			    struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_beacon_notif *beacon = (void *)pkt->data;
+	u16 status __maybe_unused =
+		le16_to_cpu(beacon->beacon_notify_hdr.status.status);
+	u32 rate __maybe_unused =
+		le32_to_cpu(beacon->beacon_notify_hdr.initial_rate);
+
+	IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n",
+		     status & TX_STATUS_MSK,
+		     beacon->beacon_notify_hdr.failure_frame,
+		     le64_to_cpu(beacon->tsf),
+		     rate);
+	return 0;
+}